Cheapest priced copy (The List): $0.35 at Card Kingdom, near mint, their price list as of .
Magmaw 
Creature — Elemental · 4/4 · Rare · Duel Decks: Zendikar vs. Eldrazi · #62
{1}, Sacrifice a nonland permanent: This creature deals 1 damage to any target.
Legal inCommanderModernLegacyVintage
Not legal inBrawlStandardPioneerPauper
4 printings · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Duel Decks: Zendikar vs. Eldrazi | 62 | Rare | $0.49 | — |
| The List | UMA-138 | Uncommon | $0.35 | — |
| Rise of the Eldrazi | 158 | Rare | $0.49 | $0.49 |
| Ultimate Masters | 138 | Uncommon | $0.35 | $0.49 |
One ruling from Wizards of the Coast
- 7 December 2018You can sacrifice Magmaw to pay the cost for its own ability. It still deals 1 damage to the target.